25250025525 has 24 divisors (see below), whose sum is σ = 42249691680. Its totient is φ = 13304427840.

The previous prime is 25250025499. The next prime is 25250025527. The reversal of 25250025525 is 52552005252.

It is not a de Polignac number, because 25250025525 - 2⁷ = 25250025397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25250025527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2021890 + ... + 2034339.

It is an arithmetic number, because the mean of its divisors is an integer number (1760403820).

Almost surely, 2^25250025525 is an apocalyptic number.

25250025525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25250025525 is a deficient number, since it is larger than the sum of its proper divisors (16999666155).

25250025525 is a wasteful number, since it uses less digits than its factorization.

25250025525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056325 (or 4056320 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 33.

The spelling of 25250025525 in words is "twenty-five billion, two hundred fifty million, twenty-five thousand, five hundred twenty-five".