25250056951157 has 4 divisors (see below), whose sum is σ = 25250074955820. Its totient is φ = 25250038946496.

The previous prime is 25250056951127. The next prime is 25250056951219. The reversal of 25250056951157 is 75115965005252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18180621487876 + 7069435463281 = 4263874^2 + 2658841^2 .

It is a cyclic number.

It is not a de Polignac number, because 25250056951157 - 2¹⁰ = 25250056950133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25250056951099 and 25250056951108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25250056951127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6702932 + ... + 9768797.

It is an arithmetic number, because the mean of its divisors is an integer number (6312518738955).

Almost surely, 2^{25250056951157} is an apocalyptic number.

It is an amenable number.

25250056951157 is a deficient number, since it is larger than the sum of its proper divisors (18004663).

25250056951157 is a wasteful number, since it uses less digits than its factorization.

25250056951157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18004662.

The product of its (nonzero) digits is 4725000, while the sum is 53.

The spelling of 25250056951157 in words is "twenty-five trillion, two hundred fifty billion, fifty-six million, nine hundred fifty-one thousand, one hundred fifty-seven".