1251425424340 has 48 divisors (see below), whose sum is σ = 3234453409152. Its totient is φ = 396055518336.

The previous prime is 1251425424289. The next prime is 1251425424343. The reversal of 1251425424340 is 434245241521.

It is a self number, because there is not a number n which added to its sum of digits gives 1251425424340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251425424343) 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, 343796374 + ... + 343800013.

It is an arithmetic number, because the mean of its divisors is an integer number (67384446024).

Almost surely, 2^{1251425424340} is an apocalyptic number.

1251425424340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1251425424340 is an abundant number, since it is smaller than the sum of its proper divisors (1983027984812).

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

1251425424340 is a wasteful number, since it uses less digits than its factorization.

1251425424340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687596416 (or 687596414 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

The spelling of 1251425424340 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-five million, four hundred twenty-four thousand, three hundred forty".