25572031 has 2 divisors, whose sum is σ = 25572032. Its totient is φ = 25572030.

The previous prime is 25572007. The next prime is 25572049. The reversal of 25572031 is 13027552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25572031 - 2¹⁵ = 25539263 is a prime.

It is a super-2 number, since 2×25572031² = 1307857538929922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25571987 and 25572005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25572061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12786015 + 12786016.

It is an arithmetic number, because the mean of its divisors is an integer number (12786016).

Almost surely, 2^25572031 is an apocalyptic number.

25572031 is a deficient number, since it is larger than the sum of its proper divisors (1).

25572031 is an equidigital number, since it uses as much as digits as its factorization.

25572031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 25572031 is about 5056.8795714353. The cubic root of 25572031 is about 294.6151488242.

Adding to 25572031 its reverse (13027552), we get a palindrome (38599583).

The spelling of 25572031 in words is "twenty-five million, five hundred seventy-two thousand, thirty-one".