1340825557 has 8 divisors (see below), whose sum is σ = 1360340352. Its totient is φ = 1321328400.

The previous prime is 1340825531. The next prime is 1340825579. The reversal of 1340825557 is 7555280431.

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 1340825557 - 2¹¹ = 1340823509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340825587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272832 + ... + 277702.

It is an arithmetic number, because the mean of its divisors is an integer number (170042544).

Almost surely, 2^1340825557 is an apocalyptic number.

It is an amenable number.

1340825557 is a deficient number, since it is larger than the sum of its proper divisors (19514795).

1340825557 is an equidigital number, since it uses as much as digits as its factorization.

1340825557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8819.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 1340825557 is about 36617.2849485049. The cubic root of 1340825557 is about 1102.7001316715.

The spelling of 1340825557 in words is "one billion, three hundred forty million, eight hundred twenty-five thousand, five hundred fifty-seven".