1252201645 has 8 divisors (see below), whose sum is σ = 1502837856. Its totient is φ = 1001630736.

The previous prime is 1252201603. The next prime is 1252201651. The reversal of 1252201645 is 5461022521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252201645 - 2²³ = 1243813037 is a prime.

It is a super-3 number, since 3×1252201645³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51454 + ... + 71776.

It is an arithmetic number, because the mean of its divisors is an integer number (187854732).

Almost surely, 2^1252201645 is an apocalyptic number.

It is an amenable number.

1252201645 is a deficient number, since it is larger than the sum of its proper divisors (250636211).

1252201645 is a wasteful number, since it uses less digits than its factorization.

1252201645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32651.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1252201645 is about 35386.4613235062. The cubic root of 1252201645 is about 1077.8494141183.

The spelling of 1252201645 in words is "one billion, two hundred fifty-two million, two hundred one thousand, six hundred forty-five".