140525251 has 2 divisors, whose sum is σ = 140525252. Its totient is φ = 140525250.

The previous prime is 140525249. The next prime is 140525257. The reversal of 140525251 is 152525041.

It is a weak prime.

It is an emirp because it is prime and its reverse (152525041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140525251 - 2¹ = 140525249 is a prime.

It is a super-2 number, since 2×140525251² = 39494692337226002, which contains 22 as substring.

Together with 140525249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (140525257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70262625 + 70262626.

It is an arithmetic number, because the mean of its divisors is an integer number (70262626).

Almost surely, 2^140525251 is an apocalyptic number.

140525251 is a deficient number, since it is larger than the sum of its proper divisors (1).

140525251 is an equidigital number, since it uses as much as digits as its factorization.

140525251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 140525251 is about 11854.3346924237. The cubic root of 140525251 is about 519.8979718465.

The spelling of 140525251 in words is "one hundred forty million, five hundred twenty-five thousand, two hundred fifty-one".