61277615706025 has 48 divisors (see below), whose sum is σ = 78544576825344. Its totient is φ = 47399157218880.

The previous prime is 61277615705987. The next prime is 61277615706031. The reversal of 61277615706025 is 52060751677216.

It is not a de Polignac number, because 61277615706025 - 2³³ = 61269025771433 is a prime.

It is a Duffinian number.

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, 31026754 + ... + 32942596.

It is an arithmetic number, because the mean of its divisors is an integer number (1636345350528).

Almost surely, 2^{61277615706025} is an apocalyptic number.

It is an amenable number.

61277615706025 is a deficient number, since it is larger than the sum of its proper divisors (17266961119319).

61277615706025 is a wasteful number, since it uses less digits than its factorization.

61277615706025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916230 (or 1916225 counting only the distinct ones).

The product of its (nonzero) digits is 7408800, while the sum is 55.

The spelling of 61277615706025 in words is "sixty-one trillion, two hundred seventy-seven billion, six hundred fifteen million, seven hundred six thousand, twenty-five".