2156077025 has 24 divisors (see below), whose sum is σ = 2726649144. Its totient is φ = 1690790400.

The previous prime is 2156077019. The next prime is 2156077031. The reversal of 2156077025 is 5207706512.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2156077019) and next prime (2156077031).

It can be written as a sum of positive squares in 12 ways, for example, as 2155187776 + 889249 = 46424^2 + 943^2 .

It is not a de Polignac number, because 2156077025 - 2⁴ = 2156077009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475067 + ... + 479583.

It is an arithmetic number, because the mean of its divisors is an integer number (113610381).

Almost surely, 2^2156077025 is an apocalyptic number.

2156077025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2156077025 is a deficient number, since it is larger than the sum of its proper divisors (570572119).

2156077025 is a wasteful number, since it uses less digits than its factorization.

2156077025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901 (or 4896 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 2156077025 is about 46433.5764829719. The cubic root of 2156077025 is about 1291.8777663070.

The spelling of 2156077025 in words is "two billion, one hundred fifty-six million, seventy-seven thousand, twenty-five".