25125157 has 2 divisors, whose sum is σ = 25125158. Its totient is φ = 25125156.

The previous prime is 25125151. The next prime is 25125197. The reversal of 25125157 is 75152152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23872996 + 1252161 = 4886^2 + 1119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25125157 is a prime.

It is the 5013-rd Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25125151) by changing a digit.

It is a nontrivial repunit in base 5012.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12562578 + 12562579.

It is an arithmetic number, because the mean of its divisors is an integer number (12562579).

Almost surely, 2^25125157 is an apocalyptic number.

It is an amenable number.

25125157 is a deficient number, since it is larger than the sum of its proper divisors (1).

25125157 is an equidigital number, since it uses as much as digits as its factorization.

25125157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3500, while the sum is 28.

The square root of 25125157 is about 5012.5000748130. The cubic root of 25125157 is about 292.8889101938. Note that the first 3 decimals are identical.

The spelling of 25125157 in words is "twenty-five million, one hundred twenty-five thousand, one hundred fifty-seven".