25013493 has 6 divisors (see below), whose sum is σ = 36130614. Its totient is φ = 16675656.

The previous prime is 25013449. The next prime is 25013543. The reversal of 25013493 is 39431052.

It can be written as a sum of positive squares in only one way, i.e., 24980004 + 33489 = 4998^2 + 183^2 .

It is not a de Polignac number, because 25013493 - 2⁸ = 25013237 is a prime.

It is a super-2 number, since 2×25013493² = 1251349664122098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25013413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1389630 + ... + 1389647.

It is an arithmetic number, because the mean of its divisors is an integer number (6021769).

Almost surely, 2^25013493 is an apocalyptic number.

It is an amenable number.

25013493 is a deficient number, since it is larger than the sum of its proper divisors (11117121).

25013493 is a wasteful number, since it uses less digits than its factorization.

25013493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2779283 (or 2779280 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 25013493 is about 5001.3491179881. The cubic root of 25013493 is about 292.4543693886.

The spelling of 25013493 in words is "twenty-five million, thirteen thousand, four hundred ninety-three".