135556404025 has 48 divisors (see below), whose sum is σ = 196789190400. Its totient is φ = 92589772800.

The previous prime is 135556404013. The next prime is 135556404101. The reversal of 135556404025 is 520404655531.

It is a de Polignac number, because none of the positive numbers 2^k-135556404025 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2173020 + ... + 2234530.

It is an arithmetic number, because the mean of its divisors is an integer number (4099774800).

Almost surely, 2^135556404025 is an apocalyptic number.

It is an amenable number.

135556404025 is a deficient number, since it is larger than the sum of its proper divisors (61232786375).

135556404025 is an equidigital number, since it uses as much as digits as its factorization.

135556404025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61799 (or 61780 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 135556404025 in words is "one hundred thirty-five billion, five hundred fifty-six million, four hundred four thousand, twenty-five".