787425321 has 4 divisors (see below), whose sum is σ = 1049900432. Its totient is φ = 524950212.

The previous prime is 787425319. The next prime is 787425323. The reversal of 787425321 is 123524787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123524787 = 3 ⋅41174929.

It is an interprime number because it is at equal distance from previous prime (787425319) and next prime (787425323).

It is not a de Polignac number, because 787425321 - 2¹ = 787425319 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 787425321.

It is not an unprimeable number, because it can be changed into a prime (787425323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131237551 + ... + 131237556.

It is an arithmetic number, because the mean of its divisors is an integer number (262475108).

Almost surely, 2^787425321 is an apocalyptic number.

It is an amenable number.

787425321 is a deficient number, since it is larger than the sum of its proper divisors (262475111).

787425321 is a wasteful number, since it uses less digits than its factorization.

787425321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262475110.

The product of its digits is 94080, while the sum is 39.

The square root of 787425321 is about 28061.0997824390. The cubic root of 787425321 is about 923.4281836669.

The spelling of 787425321 in words is "seven hundred eighty-seven million, four hundred twenty-five thousand, three hundred twenty-one".