25310945940 has 192 divisors, whose sum is σ = 84550921728. Its totient is φ = 5536512000.

The previous prime is 25310945909. The next prime is 25310946019. The reversal of 25310945940 is 4954901352.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 25310945892 and 25310945901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 934590 + ... + 961290.

It is an arithmetic number, because the mean of its divisors is an integer number (440369384).

Almost surely, 2^25310945940 is an apocalyptic number.

25310945940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25310945940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42275460864).

25310945940 is an abundant number, since it is smaller than the sum of its proper divisors (59239975788).

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

25310945940 is a wasteful number, since it uses less digits than its factorization.

25310945940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26818 (or 26816 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 25310945940 in words is "twenty-five billion, three hundred ten million, nine hundred forty-five thousand, nine hundred forty".