25237988 has 6 divisors (see below), whose sum is σ = 44166486. Its totient is φ = 12618992.

The previous prime is 25237973. The next prime is 25237991. The reversal of 25237988 is 88973252.

It can be written as a sum of positive squares in only one way, i.e., 22829284 + 2408704 = 4778^2 + 1552^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3154745 + ... + 3154752.

It is an arithmetic number, because the mean of its divisors is an integer number (7361081).

Almost surely, 2^25237988 is an apocalyptic number.

It is an amenable number.

25237988 is a deficient number, since it is larger than the sum of its proper divisors (18928498).

25237988 is a wasteful number, since it uses less digits than its factorization.

25237988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6309501 (or 6309499 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 25237988 is about 5023.7424297032. The cubic root of 25237988 is about 293.3266866033.

The spelling of 25237988 in words is "twenty-five million, two hundred thirty-seven thousand, nine hundred eighty-eight".