25148791 has 2 divisors, whose sum is σ = 25148792. Its totient is φ = 25148790.

The previous prime is 25148777. The next prime is 25148801. The reversal of 25148791 is 19784152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25148791 - 2⁷ = 25148663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25148791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25148741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12574395 + 12574396.

It is an arithmetic number, because the mean of its divisors is an integer number (12574396).

Almost surely, 2^25148791 is an apocalyptic number.

25148791 is a deficient number, since it is larger than the sum of its proper divisors (1).

25148791 is an equidigital number, since it uses as much as digits as its factorization.

25148791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 25148791 is about 5014.8570268752. The cubic root of 25148791 is about 292.9807168135.

The spelling of 25148791 in words is "twenty-five million, one hundred forty-eight thousand, seven hundred ninety-one".