1425164678 has 16 divisors (see below), whose sum is σ = 2456641824. Its totient is φ = 607409280.

The previous prime is 1425164677. The next prime is 1425164681. The reversal of 1425164678 is 8764615241.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425164677) 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, 278675 + ... + 283742.

It is an arithmetic number, because the mean of its divisors is an integer number (153540114).

Almost surely, 2^1425164678 is an apocalyptic number.

1425164678 is a deficient number, since it is larger than the sum of its proper divisors (1031477146).

1425164678 is a wasteful number, since it uses less digits than its factorization.

1425164678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562607.

The product of its digits is 322560, while the sum is 44.

The square root of 1425164678 is about 37751.3533267352. The cubic root of 1425164678 is about 1125.3519038706.

The spelling of 1425164678 in words is "one billion, four hundred twenty-five million, one hundred sixty-four thousand, six hundred seventy-eight".