25246920 has 32 divisors (see below), whose sum is σ = 75741120. Its totient is φ = 6732480.

The previous prime is 25246901. The next prime is 25246933. The reversal of 25246920 is 2964252.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105076 + ... + 105315.

It is an arithmetic number, because the mean of its divisors is an integer number (2366910).

Almost surely, 2^25246920 is an apocalyptic number.

25246920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25246920 is an abundant number, since it is smaller than the sum of its proper divisors (50494200).

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

25246920 is a wasteful number, since it uses less digits than its factorization.

25246920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210405 (or 210401 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 25246920 is about 5024.6313297594. The cubic root of 25246920 is about 293.3612863628.

The spelling of 25246920 in words is "twenty-five million, two hundred forty-six thousand, nine hundred twenty".