25378085925 has 72 divisors (see below), whose sum is σ = 46579268736. Its totient is φ = 13202161920.

The previous prime is 25378085921. The next prime is 25378085939. The reversal of 25378085925 is 52958087352.

25378085925 is a `hidden beast` number, since 2 + 537 + 8 + 0 + 85 + 9 + 25 = 666.

It is not a de Polignac number, because 25378085925 - 2² = 25378085921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25378085921) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3242617 + ... + 3250433.

It is an arithmetic number, because the mean of its divisors is an integer number (646934288).

Almost surely, 2^25378085925 is an apocalyptic number.

25378085925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25378085925 is a deficient number, since it is larger than the sum of its proper divisors (21201182811).

25378085925 is a wasteful number, since it uses less digits than its factorization.

25378085925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8187 (or 8179 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 25378085925 in words is "twenty-five billion, three hundred seventy-eight million, eighty-five thousand, nine hundred twenty-five".