25135025 has 24 divisors (see below), whose sum is σ = 33148920. Its totient is φ = 18869760.

The previous prime is 25134943. The next prime is 25135031. The reversal of 25135025 is 52053152.

It can be written as a sum of positive squares in 12 ways, for example, as 7360369 + 17774656 = 2713^2 + 4216^2 .

It is not a de Polignac number, because 25135025 - 2¹² = 25130929 is a prime.

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, 26357 + ... + 27293.

It is an arithmetic number, because the mean of its divisors is an integer number (1381205).

Almost surely, 2^25135025 is an apocalyptic number.

25135025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25135025 is a deficient number, since it is larger than the sum of its proper divisors (8013895).

25135025 is a wasteful number, since it uses less digits than its factorization.

25135025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25135025 is about 5013.4843173186. The cubic root of 25135025 is about 292.9272495823.

Adding to 25135025 its reverse (52053152), we get a palindrome (77188177).

It can be divided in two parts, 2513 and 5025, that multiplied together give a triangular number (12627825 = T₅₀₂₅).

The spelling of 25135025 in words is "twenty-five million, one hundred thirty-five thousand, twenty-five".