140644725 has 48 divisors (see below), whose sum is σ = 254275392. Its totient is φ = 68175360.

The previous prime is 140644709. The next prime is 140644741. The reversal of 140644725 is 527446041.

It is an interprime number because it is at equal distance from previous prime (140644709) and next prime (140644741).

It is not a de Polignac number, because 140644725 - 2⁴ = 140644709 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 64249 + ... + 66401.

It is an arithmetic number, because the mean of its divisors is an integer number (5297404).

Almost surely, 2^140644725 is an apocalyptic number.

140644725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140644725 is a deficient number, since it is larger than the sum of its proper divisors (113630667).

140644725 is a wasteful number, since it uses less digits than its factorization.

140644725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 140644725 is about 11859.3728754939. The cubic root of 140644725 is about 520.0452684949.

The spelling of 140644725 in words is "one hundred forty million, six hundred forty-four thousand, seven hundred twenty-five".