25512949 has 8 divisors (see below), whose sum is σ = 31808448. Its totient is φ = 19880160.

The previous prime is 25512931. The next prime is 25512959. The reversal of 25512949 is 94921552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25512949 - 2⁵ = 25512917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25512959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165592 + ... + 165745.

It is an arithmetic number, because the mean of its divisors is an integer number (3976056).

Almost surely, 2^25512949 is an apocalyptic number.

It is an amenable number.

25512949 is a deficient number, since it is larger than the sum of its proper divisors (6295499).

25512949 is a wasteful number, since it uses less digits than its factorization.

25512949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331355.

The product of its digits is 32400, while the sum is 37.

The square root of 25512949 is about 5051.0344485066. The cubic root of 25512949 is about 294.3880794552.

The spelling of 25512949 in words is "twenty-five million, five hundred twelve thousand, nine hundred forty-nine".