2525221431 has 12 divisors (see below), whose sum is σ = 3653959920. Its totient is φ = 1680518880.

The previous prime is 2525221427. The next prime is 2525221511. The reversal of 2525221431 is 1341225252.

2525221431 is a `hidden beast` number, since 2 + 5 + 2 + 5 + 221 + 431 = 666.

2525221431 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2525221431 - 2² = 2525221427 is a prime.

It is a super-2 number, since 2×2525221431² = 12753486551163375522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2525221395 and 2525221404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525221031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241435 + ... + 251676.

It is an arithmetic number, because the mean of its divisors is an integer number (304496660).

Almost surely, 2^2525221431 is an apocalyptic number.

2525221431 is a deficient number, since it is larger than the sum of its proper divisors (1128738489).

2525221431 is a wasteful number, since it uses less digits than its factorization.

2525221431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493686 (or 493683 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 2525221431 is about 50251.5813781019. The cubic root of 2525221431 is about 1361.7576451052.

Adding to 2525221431 its reverse (1341225252), we get a palindrome (3866446683).

The spelling of 2525221431 in words is "two billion, five hundred twenty-five million, two hundred twenty-one thousand, four hundred thirty-one".