137775025 has 6 divisors (see below), whose sum is σ = 170841062. Its totient is φ = 110220000.

The previous prime is 137774983. The next prime is 137775031. The reversal of 137775025 is 520577731.

It can be written as a sum of positive squares in 3 ways, for example, as 1912689 + 135862336 = 1383^2 + 11656^2 .

It is not a de Polignac number, because 137775025 - 2¹¹ = 137772977 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 5 ways as a sum of consecutive naturals, for example, 2755476 + ... + 2755525.

Almost surely, 2^137775025 is an apocalyptic number.

It is an amenable number.

137775025 is a deficient number, since it is larger than the sum of its proper divisors (33066037).

137775025 is an equidigital number, since it uses as much as digits as its factorization.

137775025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511011 (or 5511006 counting only the distinct ones).

The product of its (nonzero) digits is 51450, while the sum is 37.

The square root of 137775025 is about 11737.7606467333. The cubic root of 137775025 is about 516.4839531985.

The spelling of 137775025 in words is "one hundred thirty-seven million, seven hundred seventy-five thousand, twenty-five".