25245969042 has 24 divisors (see below), whose sum is σ = 58735520496. Its totient is φ = 7213133928.

The previous prime is 25245969031. The next prime is 25245969043. The reversal of 25245969042 is 24096954252.

It is a junction number, because it is equal to n+sod(n) for n = 25245968982 and 25245969000.

It is not an unprimeable number, because it can be changed into a prime (25245969043) 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, 42935028 + ... + 42935615.

It is an arithmetic number, because the mean of its divisors is an integer number (2447313354).

Almost surely, 2^25245969042 is an apocalyptic number.

25245969042 is an abundant number, since it is smaller than the sum of its proper divisors (33489551454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25245969042 is a wasteful number, since it uses less digits than its factorization.

25245969042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85870662 (or 85870655 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 25245969042 in words is "twenty-five billion, two hundred forty-five million, nine hundred sixty-nine thousand, forty-two".