1251125260242 has 32 divisors (see below), whose sum is σ = 2939706907200. Its totient is φ = 349965107520.

The previous prime is 1251125260219. The next prime is 1251125260277. The reversal of 1251125260242 is 2420625211521.

It is a super-3 number, since 3×1251125260242³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729093117 + ... + 729094832.

It is an arithmetic number, because the mean of its divisors is an integer number (91865840850).

Almost surely, 2^{1251125260242} is an apocalyptic number.

1251125260242 is an abundant number, since it is smaller than the sum of its proper divisors (1688581646958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251125260242 is a wasteful number, since it uses less digits than its factorization.

1251125260242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458187978.

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 1251125260242 in words is "one trillion, two hundred fifty-one billion, one hundred twenty-five million, two hundred sixty thousand, two hundred forty-two".