25870961031 has 16 divisors (see below), whose sum is σ = 35431548384. Its totient is φ = 16778962944.

The previous prime is 25870961021. The next prime is 25870961047. The reversal of 25870961031 is 13016907852.

It is not a de Polignac number, because 25870961031 - 2¹³ = 25870952839 is a prime.

It is a super-2 number, since 2×25870961031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25870961021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1605591 + ... + 1621623.

It is an arithmetic number, because the mean of its divisors is an integer number (2214471774).

Almost surely, 2^25870961031 is an apocalyptic number.

25870961031 is a deficient number, since it is larger than the sum of its proper divisors (9560587353).

25870961031 is a wasteful number, since it uses less digits than its factorization.

25870961031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30610.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 25870961031 in words is "twenty-five billion, eight hundred seventy million, nine hundred sixty-one thousand, thirty-one".