25012969 has 2 divisors, whose sum is σ = 25012970. Its totient is φ = 25012968.

The previous prime is 25012961. The next prime is 25012973. The reversal of 25012969 is 96921052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22924944 + 2088025 = 4788^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 25012969 - 2³ = 25012961 is a prime.

It is a super-2 number, since 2×25012969² = 1251297236389922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (25012961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12506484 + 12506485.

It is an arithmetic number, because the mean of its divisors is an integer number (12506485).

Almost surely, 2^25012969 is an apocalyptic number.

25012969 is the 2888-th hex number.

It is an amenable number.

25012969 is a deficient number, since it is larger than the sum of its proper divisors (1).

25012969 is an equidigital number, since it uses as much as digits as its factorization.

25012969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 25012969 is about 5001.2967318487. The cubic root of 25012969 is about 292.4523271953.

The spelling of 25012969 in words is "twenty-five million, twelve thousand, nine hundred sixty-nine".