1402649392225 has 9 divisors (see below), whose sum is σ = 1739292589267. Its totient is φ = 1122114776440.

The previous prime is 1402649392171. The next prime is 1402649392247. The reversal of 1402649392225 is 5222939462041.

The square root of 1402649392225 is 1184335.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 504953781201 + 897695611024 = 710601^2 + 947468^2 .

It is not a de Polignac number, because 1402649392225 - 2⁷ = 1402649392097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5803242 + ... + 6040108.

Almost surely, 2^{1402649392225} is an apocalyptic number.

1402649392225 is the 1184335-th square number.

1402649392225 is the 592168-th centered octagonal number.

It is an amenable number.

1402649392225 is a deficient number, since it is larger than the sum of its proper divisors (336643197042).

1402649392225 is an frugal number, since it uses more digits than its factorization.

1402649392225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473744 (or 236872 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

Multiplying 1402649392225 by its sum of digits (49), we get a square (68729820219025 = 8290345²).

The spelling of 1402649392225 in words is "one trillion, four hundred two billion, six hundred forty-nine million, three hundred ninety-two thousand, two hundred twenty-five".