25720325 has 24 divisors (see below), whose sum is σ = 34122816. Its totient is φ = 19184000.

The previous prime is 25720313. The next prime is 25720349. The reversal of 25720325 is 52302752.

It is not a de Polignac number, because 25720325 - 2¹⁰ = 25719301 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25720294 and 25720303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23030 + ... + 24120.

It is an arithmetic number, because the mean of its divisors is an integer number (1421784).

Almost surely, 2^25720325 is an apocalyptic number.

25720325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25720325 is a deficient number, since it is larger than the sum of its proper divisors (8402491).

25720325 is a wasteful number, since it uses less digits than its factorization.

25720325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 25720325 is about 5071.5209750133. The cubic root of 25720325 is about 295.1835494697.

The spelling of 25720325 in words is "twenty-five million, seven hundred twenty thousand, three hundred twenty-five".