215542406050025 has 24 divisors (see below), whose sum is σ = 267572755732704. Its totient is φ = 172240273180800.

The previous prime is 215542406050019. The next prime is 215542406050033. The reversal of 215542406050025 is 520050604245512.

It is not a de Polignac number, because 215542406050025 - 2¹⁰ = 215542406049001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2110605965 + ... + 2110708085.

It is an arithmetic number, because the mean of its divisors is an integer number (11148864822196).

Almost surely, 2^{215542406050025} is an apocalyptic number.

215542406050025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215542406050025 is a deficient number, since it is larger than the sum of its proper divisors (52030349682679).

215542406050025 is a wasteful number, since it uses less digits than its factorization.

215542406050025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196121 (or 196116 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 41.

The spelling of 215542406050025 in words is "two hundred fifteen trillion, five hundred forty-two billion, four hundred six million, fifty thousand, twenty-five".