99925261 has 2 divisors, whose sum is σ = 99925262. Its totient is φ = 99925260.

The previous prime is 99925223. The next prime is 99925289. The reversal of 99925261 is 16252999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97397161 + 2528100 = 9869^2 + 1590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99925261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99925061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49962630 + 49962631.

It is an arithmetic number, because the mean of its divisors is an integer number (49962631).

Almost surely, 2^99925261 is an apocalyptic number.

It is an amenable number.

99925261 is a deficient number, since it is larger than the sum of its proper divisors (1).

99925261 is an equidigital number, since it uses as much as digits as its factorization.

99925261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 43.

The square root of 99925261 is about 9996.2623514992. The cubic root of 99925261 is about 464.0432186383.

The spelling of 99925261 in words is "ninety-nine million, nine hundred twenty-five thousand, two hundred sixty-one".