25157049 has 8 divisors (see below), whose sum is σ = 33807360. Its totient is φ = 16639056.

The previous prime is 25157023. The next prime is 25157057. The reversal of 25157049 is 94075152.

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

It is not a de Polignac number, because 25157049 - 2⁵ = 25157017 is a prime.

It is a super-2 number, since 2×25157049² = 1265754228776802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25157449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32634 + ... + 33395.

It is an arithmetic number, because the mean of its divisors is an integer number (4225920).

Almost surely, 2^25157049 is an apocalyptic number.

It is an amenable number.

25157049 is a deficient number, since it is larger than the sum of its proper divisors (8650311).

25157049 is a wasteful number, since it uses less digits than its factorization.

25157049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66159.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 25157049 is about 5015.6803127791. The cubic root of 25157049 is about 293.0127815754.

The spelling of 25157049 in words is "twenty-five million, one hundred fifty-seven thousand, forty-nine".