261523050612025 has 12 divisors (see below), whose sum is σ = 324410541691600. Its totient is φ = 209139757307280.

The previous prime is 261523050612023. The next prime is 261523050612119. The reversal of 261523050612025 is 520216050325162.

It is not a de Polignac number, because 261523050612025 - 2¹ = 261523050612023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261523050612023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1967011755 + ... + 1967144704.

Almost surely, 2^{261523050612025} is an apocalyptic number.

261523050612025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

261523050612025 is a deficient number, since it is larger than the sum of its proper divisors (62887491079575).

261523050612025 is a wasteful number, since it uses less digits than its factorization.

261523050612025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934159128 (or 3934159123 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 261523050612025 in words is "two hundred sixty-one trillion, five hundred twenty-three billion, fifty million, six hundred twelve thousand, twenty-five".