137900025 has 18 divisors (see below), whose sum is σ = 246994670. Its totient is φ = 73546560.

The previous prime is 137899991. The next prime is 137900027. The reversal of 137900025 is 520009731.

It can be written as a sum of positive squares in 3 ways, for example, as 38638656 + 99261369 = 6216^2 + 9963^2 .

It is not a de Polignac number, because 137900025 - 2⁶ = 137899961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137900027) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 306220 + ... + 306669.

Almost surely, 2^137900025 is an apocalyptic number.

137900025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137900025 is a deficient number, since it is larger than the sum of its proper divisors (109094645).

137900025 is a wasteful number, since it uses less digits than its factorization.

137900025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612905 (or 612897 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 137900025 is about 11743.0841349281. The cubic root of 137900025 is about 516.6401038489.

Adding to 137900025 its reverse (520009731), we get a palindrome (657909756).

The spelling of 137900025 in words is "one hundred thirty-seven million, nine hundred thousand, twenty-five".