139025601 has 24 divisors (see below), whose sum is σ = 235924416. Its totient is φ = 77775840.

The previous prime is 139025573. The next prime is 139025633. The reversal of 139025601 is 106520931.

139025601 is a `hidden beast` number, since 1 + 39 + 0 + 25 + 601 = 666.

It is not a de Polignac number, because 139025601 - 2¹¹ = 139023553 is a prime.

It is a super-2 number, since 2×139025601² = 38656235466822402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139025801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52725 + ... + 55298.

It is an arithmetic number, because the mean of its divisors is an integer number (9830184).

Almost surely, 2^139025601 is an apocalyptic number.

139025601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139025601 is a deficient number, since it is larger than the sum of its proper divisors (96898815).

139025601 is a wasteful number, since it uses less digits than its factorization.

139025601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108053 (or 108050 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 139025601 is about 11790.9117968035. The cubic root of 139025601 is about 518.0419471305.

It can be divided in two parts, 13902 and 5601, that added together give a triangular number (19503 = T₁₉₇).

The spelling of 139025601 in words is "one hundred thirty-nine million, twenty-five thousand, six hundred one".