25123190904 has 256 divisors, whose sum is σ = 83437516800. Its totient is φ = 6848354304.

The previous prime is 25123190849. The next prime is 25123190969. The reversal of 25123190904 is 40909132152.

25123190904 is a `hidden beast` number, since 251 + 2 + 319 + 0 + 90 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 19369584 + ... + 19370880.

It is an arithmetic number, because the mean of its divisors is an integer number (325927800).

Almost surely, 2^25123190904 is an apocalyptic number.

25123190904 is a gapful number since it is divisible by the number (24) 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 25123190904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41718758400).

25123190904 is an abundant number, since it is smaller than the sum of its proper divisors (58314325896).

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

25123190904 is a wasteful number, since it uses less digits than its factorization.

25123190904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1889 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 25123190904 in words is "twenty-five billion, one hundred twenty-three million, one hundred ninety thousand, nine hundred four".