25113919 has 2 divisors, whose sum is σ = 25113920. Its totient is φ = 25113918.

The previous prime is 25113901. The next prime is 25113929. The reversal of 25113919 is 91931152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25113919 - 2⁷ = 25113791 is a prime.

It is a super-2 number, since 2×25113919² = 1261417855077122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25113929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12556959 + 12556960.

It is an arithmetic number, because the mean of its divisors is an integer number (12556960).

Almost surely, 2^25113919 is an apocalyptic number.

25113919 is a deficient number, since it is larger than the sum of its proper divisors (1).

25113919 is an equidigital number, since it uses as much as digits as its factorization.

25113919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 31.

The square root of 25113919 is about 5011.3789519453. The cubic root of 25113919 is about 292.8452358208.

The spelling of 25113919 in words is "twenty-five million, one hundred thirteen thousand, nine hundred nineteen".