25297137 has 16 divisors (see below), whose sum is σ = 37554880. Its totient is φ = 16829856.

The previous prime is 25297117. The next prime is 25297141. The reversal of 25297137 is 73179252.

It is not a de Polignac number, because 25297137 - 2⁶ = 25297073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25297117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23973 + ... + 25005.

It is an arithmetic number, because the mean of its divisors is an integer number (2347180).

Almost surely, 2^25297137 is an apocalyptic number.

25297137 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

25297137 is a deficient number, since it is larger than the sum of its proper divisors (12257743).

25297137 is a wasteful number, since it uses less digits than its factorization.

25297137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1943 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 25297137 is about 5029.6259304246. The cubic root of 25297137 is about 293.5556594743. Note that the first 3 decimals are identical.

The spelling of 25297137 in words is "twenty-five million, two hundred ninety-seven thousand, one hundred thirty-seven".