25157443 has 2 divisors, whose sum is σ = 25157444. Its totient is φ = 25157442.

The previous prime is 25157411. The next prime is 25157449. The reversal of 25157443 is 34475152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25157443 - 2⁵ = 25157411 is a prime.

It is not a weakly prime, because it can be changed into another prime (25157449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12578721 + 12578722.

It is an arithmetic number, because the mean of its divisors is an integer number (12578722).

Almost surely, 2^25157443 is an apocalyptic number.

25157443 is a deficient number, since it is larger than the sum of its proper divisors (1).

25157443 is an equidigital number, since it uses as much as digits as its factorization.

25157443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 25157443 is about 5015.7195894507. The cubic root of 25157443 is about 293.0143112518.

It can be divided in two parts, 25157 and 443, that added together give a square (25600 = 160²).

The spelling of 25157443 in words is "twenty-five million, one hundred fifty-seven thousand, four hundred forty-three".