1425521277 has 12 divisors (see below), whose sum is σ = 2082223260. Its totient is φ = 939668928.

The previous prime is 1425521269. The next prime is 1425521287. The reversal of 1425521277 is 7721255241.

It can be written as a sum of positive squares in 2 ways, for example, as 1014486201 + 411035076 = 31851^2 + 20274^2 .

It is not a de Polignac number, because 1425521277 - 2³ = 1425521269 is a prime.

It is a super-3 number, since 3×1425521277³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425521287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889038 + ... + 890639.

It is an arithmetic number, because the mean of its divisors is an integer number (173518605).

Almost surely, 2^1425521277 is an apocalyptic number.

It is an amenable number.

1425521277 is a deficient number, since it is larger than the sum of its proper divisors (656701983).

1425521277 is a wasteful number, since it uses less digits than its factorization.

1425521277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779772 (or 1779769 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 1425521277 is about 37756.0760275747. The cubic root of 1425521277 is about 1125.4457563926.

The spelling of 1425521277 in words is "one billion, four hundred twenty-five million, five hundred twenty-one thousand, two hundred seventy-seven".