25157520149 has 8 divisors (see below), whose sum is σ = 25841614848. Its totient is φ = 24473644560.

The previous prime is 25157520139. The next prime is 25157520161. The reversal of 25157520149 is 94102575152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25157520149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25157520139) 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 7 ways as a sum of consecutive naturals, for example, 193004 + ... + 295914.

It is an arithmetic number, because the mean of its divisors is an integer number (3230201856).

Almost surely, 2^25157520149 is an apocalyptic number.

It is an amenable number.

25157520149 is a deficient number, since it is larger than the sum of its proper divisors (684094699).

25157520149 is a wasteful number, since it uses less digits than its factorization.

25157520149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109555.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 25157520149 in words is "twenty-five billion, one hundred fifty-seven million, five hundred twenty thousand, one hundred forty-nine".