25142445157 has 2 divisors, whose sum is σ = 25142445158. Its totient is φ = 25142445156.

The previous prime is 25142445079. The next prime is 25142445179. The reversal of 25142445157 is 75154424152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24435629761 + 706815396 = 156319^2 + 26586^2 .

It is a cyclic number.

It is not a de Polignac number, because 25142445157 - 2²⁷ = 25008227429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25142425157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12571222578 + 12571222579.

It is an arithmetic number, because the mean of its divisors is an integer number (12571222579).

Almost surely, 2^25142445157 is an apocalyptic number.

It is an amenable number.

25142445157 is a deficient number, since it is larger than the sum of its proper divisors (1).

25142445157 is an equidigital number, since it uses as much as digits as its factorization.

25142445157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224000, while the sum is 40.

The spelling of 25142445157 in words is "twenty-five billion, one hundred forty-two million, four hundred forty-five thousand, one hundred fifty-seven".