25625901504 has 448 divisors, whose sum is σ = 83896565760. Its totient is φ = 6746664960.

The previous prime is 25625901491. The next prime is 25625901517. The reversal of 25625901504 is 40510952652.

It is an interprime number because it is at equal distance from previous prime (25625901491) and next prime (25625901517).

It is a tau number, because it is divible by the number of its divisors (448).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153448429 + ... + 153448595.

It is an arithmetic number, because the mean of its divisors is an integer number (187269120).

Almost surely, 2^25625901504 is an apocalyptic number.

25625901504 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 25625901504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41948282880).

25625901504 is an abundant number, since it is smaller than the sum of its proper divisors (58270664256).

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

25625901504 is a wasteful number, since it uses less digits than its factorization.

25625901504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 25625901504 in words is "twenty-five billion, six hundred twenty-five million, nine hundred one thousand, five hundred four".