25137525 has 24 divisors (see below), whose sum is σ = 47498944. Its totient is φ = 11491200.

The previous prime is 25137523. The next prime is 25137601. The reversal of 25137525 is 52573152.

It is not a de Polignac number, because 25137525 - 2¹ = 25137523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25137492 and 25137501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25137521) 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, 23416 + ... + 24465.

Almost surely, 2^25137525 is an apocalyptic number.

25137525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25137525 is a deficient number, since it is larger than the sum of its proper divisors (22361419).

25137525 is a wasteful number, since it uses less digits than its factorization.

25137525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47901 (or 47896 counting only the distinct ones).

The product of its digits is 10500, while the sum is 30.

The square root of 25137525 is about 5013.7336387168. The cubic root of 25137525 is about 292.9369610486.

It can be divided in two parts, 25 and 137525, that added together give a triangular number (137550 = T₅₂₄).

The spelling of 25137525 in words is "twenty-five million, one hundred thirty-seven thousand, five hundred twenty-five".