77245825852 has 12 divisors (see below), whose sum is σ = 145578671896. Its totient is φ = 35651919600.

The previous prime is 77245825847. The next prime is 77245825871. The reversal of 77245825852 is 25852854277.

It is a happy number.

It is a super-2 number, since 2×77245825852² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 77245825793 and 77245825802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742748274 + ... + 742748377.

Almost surely, 2^77245825852 is an apocalyptic number.

It is an amenable number.

77245825852 is a deficient number, since it is larger than the sum of its proper divisors (68332846044).

77245825852 is a wasteful number, since it uses less digits than its factorization.

77245825852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485496668 (or 1485496666 counting only the distinct ones).

The product of its digits is 12544000, while the sum is 55.

The spelling of 77245825852 in words is "seventy-seven billion, two hundred forty-five million, eight hundred twenty-five thousand, eight hundred fifty-two".