25279123 has 2 divisors, whose sum is σ = 25279124. Its totient is φ = 25279122.

The previous prime is 25279087. The next prime is 25279127. The reversal of 25279123 is 32197252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25279123 - 2²¹ = 23181971 is a prime.

It is not a weakly prime, because it can be changed into another prime (25279127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12639561 + 12639562.

It is an arithmetic number, because the mean of its divisors is an integer number (12639562).

Almost surely, 2^25279123 is an apocalyptic number.

25279123 is a deficient number, since it is larger than the sum of its proper divisors (1).

25279123 is an equidigital number, since it uses as much as digits as its factorization.

25279123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 25279123 is about 5027.8348222669. The cubic root of 25279123 is about 293.4859629528.

The spelling of 25279123 in words is "twenty-five million, two hundred seventy-nine thousand, one hundred twenty-three".