31523542025 has 12 divisors (see below), whose sum is σ = 39264486912. Its totient is φ = 25105740240.

The previous prime is 31523542021. The next prime is 31523542049. The reversal of 31523542025 is 52024532513.

It is not a de Polignac number, because 31523542025 - 2² = 31523542021 is a prime.

It is a super-2 number, since 2×31523542025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31523541982 and 31523542000.

It is not an unprimeable number, because it can be changed into a prime (31523542021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2821649 + ... + 2832798.

It is an arithmetic number, because the mean of its divisors is an integer number (3272040576).

Almost surely, 2^31523542025 is an apocalyptic number.

It is an amenable number.

31523542025 is a deficient number, since it is larger than the sum of its proper divisors (7740944887).

31523542025 is a wasteful number, since it uses less digits than its factorization.

31523542025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5654680 (or 5654675 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 31523542025 in words is "thirty-one billion, five hundred twenty-three million, five hundred forty-two thousand, twenty-five".