25249973 has 16 divisors (see below), whose sum is σ = 29898624. Its totient is φ = 20874240.

The previous prime is 25249969. The next prime is 25249979. The reversal of 25249973 is 37994252.

It is a cyclic number.

It is not a de Polignac number, because 25249973 - 2² = 25249969 is a prime.

It is a super-2 number, since 2×25249973² = 1275122273001458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 25249973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25249979) 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, 27386 + ... + 28292.

It is an arithmetic number, because the mean of its divisors is an integer number (1868664).

Almost surely, 2^25249973 is an apocalyptic number.

It is an amenable number.

25249973 is a deficient number, since it is larger than the sum of its proper divisors (4648651).

25249973 is an equidigital number, since it uses as much as digits as its factorization.

25249973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its digits is 136080, while the sum is 41.

The square root of 25249973 is about 5024.9351239593. The cubic root of 25249973 is about 293.3731108534.

The spelling of 25249973 in words is "twenty-five million, two hundred forty-nine thousand, nine hundred seventy-three".