25261923629 has 2 divisors, whose sum is σ = 25261923630. Its totient is φ = 25261923628.

The previous prime is 25261923593. The next prime is 25261923637. The reversal of 25261923629 is 92632916252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23295001129 + 1966922500 = 152627^2 + 44350^2 .

It is a cyclic number.

It is not a de Polignac number, because 25261923629 - 2¹² = 25261919533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25261923829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630961814 + 12630961815.

It is an arithmetic number, because the mean of its divisors is an integer number (12630961815).

Almost surely, 2^25261923629 is an apocalyptic number.

It is an amenable number.

25261923629 is a deficient number, since it is larger than the sum of its proper divisors (1).

25261923629 is an equidigital number, since it uses as much as digits as its factorization.

25261923629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The spelling of 25261923629 in words is "twenty-five billion, two hundred sixty-one million, nine hundred twenty-three thousand, six hundred twenty-nine".