25121968 has 10 divisors (see below), whose sum is σ = 48673844. Its totient is φ = 12560976.

The previous prime is 25121953. The next prime is 25121969. The reversal of 25121968 is 86912152.

It is a super-2 number, since 2×25121968² = 1262226552386048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25121969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 785046 + ... + 785077.

Almost surely, 2^25121968 is an apocalyptic number.

It is an amenable number.

25121968 is a deficient number, since it is larger than the sum of its proper divisors (23551876).

25121968 is a wasteful number, since it uses less digits than its factorization.

25121968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570131 (or 1570125 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 25121968 is about 5012.1819599851. The cubic root of 25121968 is about 292.8765180688.

The spelling of 25121968 in words is "twenty-five million, one hundred twenty-one thousand, nine hundred sixty-eight".