25502525 has 6 divisors (see below), whose sum is σ = 31623162. Its totient is φ = 20402000.

The previous prime is 25502507. The next prime is 25502539. The reversal of 25502525 is 52520552.

It can be written as a sum of positive squares in 3 ways, for example, as 9156676 + 16345849 = 3026^2 + 4043^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25502525 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 25502494 and 25502503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510026 + ... + 510075.

It is an arithmetic number, because the mean of its divisors is an integer number (5270527).

Almost surely, 2^25502525 is an apocalyptic number.

25502525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25502525 is a deficient number, since it is larger than the sum of its proper divisors (6120637).

25502525 is a wasteful number, since it uses less digits than its factorization.

25502525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020111 (or 1020106 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 25502525 is about 5050.0024752469. The cubic root of 25502525 is about 294.3479806101.

It can be divided in two parts, 255025 and 25, that multiplied together give a square (6375625 = 2525²).

The spelling of 25502525 in words is "twenty-five million, five hundred two thousand, five hundred twenty-five".