25157212 has 12 divisors (see below), whose sum is σ = 46614960. Its totient is φ = 11838656.

The previous prime is 25157207. The next prime is 25157219. The reversal of 25157212 is 21275152.

It is a super-2 number, since 2×25157212² = 1265770631225888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25157219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184912 + ... + 185047.

It is an arithmetic number, because the mean of its divisors is an integer number (3884580).

Almost surely, 2^25157212 is an apocalyptic number.

It is an amenable number.

25157212 is a deficient number, since it is larger than the sum of its proper divisors (21457748).

25157212 is a wasteful number, since it uses less digits than its factorization.

25157212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369980 (or 369978 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 25157212 is about 5015.6965617948. The cubic root of 25157212 is about 293.0134144130.

The spelling of 25157212 in words is "twenty-five million, one hundred fifty-seven thousand, two hundred twelve".