25312502 has 4 divisors (see below), whose sum is σ = 37968756. Its totient is φ = 12656250.

The previous prime is 25312501. The next prime is 25312513. The reversal of 25312502 is 20521352.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25312501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6328124 + ... + 6328127.

It is an arithmetic number, because the mean of its divisors is an integer number (9492189).

Almost surely, 2^25312502 is an apocalyptic number.

25312502 is a deficient number, since it is larger than the sum of its proper divisors (12656254).

25312502 is a wasteful number, since it uses less digits than its factorization.

25312502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12656253.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 25312502 is about 5031.1531481361. The cubic root of 25312502 is about 293.6150808207.

Adding to 25312502 its reverse (20521352), we get a palindrome (45833854).

It can be divided in two parts, 2531250 and 2, that multiplied together give a square (5062500 = 2250²).

The spelling of 25312502 in words is "twenty-five million, three hundred twelve thousand, five hundred two".