1425155631 has 4 divisors (see below), whose sum is σ = 1900207512. Its totient is φ = 950103752.

The previous prime is 1425155621. The next prime is 1425155651. The reversal of 1425155631 is 1365515241.

1425155631 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1425155631 - 2¹⁰ = 1425154607 is a prime.

It is a super-2 number, since 2×1425155631² = 4062137145142016322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1425155592 and 1425155601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425155621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237525936 + ... + 237525941.

It is an arithmetic number, because the mean of its divisors is an integer number (475051878).

Almost surely, 2^1425155631 is an apocalyptic number.

1425155631 is a deficient number, since it is larger than the sum of its proper divisors (475051881).

1425155631 is an equidigital number, since it uses as much as digits as its factorization.

1425155631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475051880.

The product of its digits is 18000, while the sum is 33.

The square root of 1425155631 is about 37751.2335030261. The cubic root of 1425155631 is about 1125.3495226066.

The spelling of 1425155631 in words is "one billion, four hundred twenty-five million, one hundred fifty-five thousand, six hundred thirty-one".