25087197954 has 64 divisors (see below), whose sum is σ = 61813382400. Its totient is φ = 6609945600.

The previous prime is 25087197929. The next prime is 25087197983. The reversal of 25087197954 is 45979178052.

It is a super-2 number, since 2×25087197954² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25087197894 and 25087197903.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550854 + ... + 594654.

It is an arithmetic number, because the mean of its divisors is an integer number (965834100).

Almost surely, 2^25087197954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25087197954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30906691200).

25087197954 is an abundant number, since it is smaller than the sum of its proper divisors (36726184446).

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

25087197954 is a wasteful number, since it uses less digits than its factorization.

25087197954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44875.

The product of its (nonzero) digits is 6350400, while the sum is 57.

The spelling of 25087197954 in words is "twenty-five billion, eighty-seven million, one hundred ninety-seven thousand, nine hundred fifty-four".