140025861 has 16 divisors (see below), whose sum is σ = 207630720. Its totient is φ = 93267360.

The previous prime is 140025857. The next prime is 140025883. The reversal of 140025861 is 168520041.

140025861 is a `hidden beast` number, since 1 + 400 + 258 + 6 + 1 = 666.

It is not a de Polignac number, because 140025861 - 2² = 140025857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140025811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50296 + ... + 53006.

It is an arithmetic number, because the mean of its divisors is an integer number (12976920).

Almost surely, 2^140025861 is an apocalyptic number.

It is an amenable number.

140025861 is a deficient number, since it is larger than the sum of its proper divisors (67604859).

140025861 is a wasteful number, since it uses less digits than its factorization.

140025861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633 (or 4627 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 140025861 is about 11833.2523424458. The cubic root of 140025861 is about 519.2813803809.

It can be divided in two parts, 1400 and 25861, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 140025861 in words is "one hundred forty million, twenty-five thousand, eight hundred sixty-one".