1251400125235 has 16 divisors (see below), whose sum is σ = 1620371249280. Its totient is φ = 922295295360.

The previous prime is 1251400125229. The next prime is 1251400125317. The reversal of 1251400125235 is 5325210041521.

It is a de Polignac number, because none of the positive numbers 2^k-1251400125235 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1251400125197 and 1251400125206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18878811 + ... + 18944980.

It is an arithmetic number, because the mean of its divisors is an integer number (101273203080).

Almost surely, 2^{1251400125235} is an apocalyptic number.

1251400125235 is a deficient number, since it is larger than the sum of its proper divisors (368971124045).

1251400125235 is a wasteful number, since it uses less digits than its factorization.

1251400125235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37824318.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 1251400125235 its reverse (5325210041521), we get a palindrome (6576610166756).

The spelling of 1251400125235 in words is "one trillion, two hundred fifty-one billion, four hundred million, one hundred twenty-five thousand, two hundred thirty-five".