25121232 has 40 divisors (see below), whose sum is σ = 72108480. Its totient is φ = 8373600.

The previous prime is 25121227. The next prime is 25121237. The reversal of 25121232 is 23212152.

It is an interprime number because it is at equal distance from previous prime (25121227) and next prime (25121237).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25121237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28644 + ... + 29507.

It is an arithmetic number, because the mean of its divisors is an integer number (1802712).

Almost surely, 2^25121232 is an apocalyptic number.

It is an amenable number.

25121232 is an abundant number, since it is smaller than the sum of its proper divisors (46987248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25121232 is a wasteful number, since it uses less digits than its factorization.

25121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58168 (or 58156 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 25121232 is about 5012.1085383300. The cubic root of 25121232 is about 292.8736578998.

Adding to 25121232 its reverse (23212152), we get a palindrome (48333384).

The spelling of 25121232 in words is "twenty-five million, one hundred twenty-one thousand, two hundred thirty-two".