135557026025 has 12 divisors (see below), whose sum is σ = 168239631900. Its totient is φ = 108349543680.

The previous prime is 135557026013. The next prime is 135557026037. The reversal of 135557026025 is 520620755531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (135557026013) and next prime (135557026037).

It can be written as a sum of positive squares in 6 ways, for example, as 58379741161 + 77177284864 = 241619^2 + 277808^2 .

It is not a de Polignac number, because 135557026025 - 2⁴ = 135557026009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2373140 + ... + 2429589.

It is an arithmetic number, because the mean of its divisors is an integer number (14019969325).

Almost surely, 2^135557026025 is an apocalyptic number.

It is an amenable number.

135557026025 is a deficient number, since it is larger than the sum of its proper divisors (32682605875).

135557026025 is a wasteful number, since it uses less digits than its factorization.

135557026025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803868 (or 4803863 counting only the distinct ones).

The product of its (nonzero) digits is 315000, while the sum is 41.

The spelling of 135557026025 in words is "one hundred thirty-five billion, five hundred fifty-seven million, twenty-six thousand, twenty-five".