11977387025 has 6 divisors (see below), whose sum is σ = 14851959942. Its totient is φ = 9581909600.

The previous prime is 11977387003. The next prime is 11977387061. The reversal of 11977387025 is 52078377911.

It can be written as a sum of positive squares in 3 ways, for example, as 3775249 + 11973611776 = 1943^2 + 109424^2 .

It is not a de Polignac number, because 11977387025 - 2¹⁸ = 11977124881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 239547716 + ... + 239547765.

It is an arithmetic number, because the mean of its divisors is an integer number (2475326657).

Almost surely, 2^11977387025 is an apocalyptic number.

It is an amenable number.

11977387025 is a deficient number, since it is larger than the sum of its proper divisors (2874572917).

11977387025 is an equidigital number, since it uses as much as digits as its factorization.

11977387025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479095491 (or 479095486 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 50.

The spelling of 11977387025 in words is "eleven billion, nine hundred seventy-seven million, three hundred eighty-seven thousand, twenty-five".