25023943840 has 48 divisors (see below), whose sum is σ = 67564651392. Its totient is φ = 8579637504.

The previous prime is 25023943837. The next prime is 25023943843. The reversal of 25023943840 is 4834932052.

It is an interprime number because it is at equal distance from previous prime (25023943837) and next prime (25023943843).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 25023943793 and 25023943802.

It is not an unprimeable number, because it can be changed into a prime (25023943843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11170284 + ... + 11172523.

It is an arithmetic number, because the mean of its divisors is an integer number (1407596904).

Almost surely, 2^25023943840 is an apocalyptic number.

25023943840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25023943840 is an abundant number, since it is smaller than the sum of its proper divisors (42540707552).

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

25023943840 is a wasteful number, since it uses less digits than its factorization.

25023943840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22342829 (or 22342821 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 25023943840 in words is "twenty-five billion, twenty-three million, nine hundred forty-three thousand, eight hundred forty".