1409961506725 has 12 divisors (see below), whose sum is σ = 1748394692676. Its totient is φ = 1127941834880.

The previous prime is 1409961506687. The next prime is 1409961506753. The reversal of 1409961506725 is 5276051699041.

It is a Cunningham number, because it is equal to 1187418²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 110541620484 + 1299419886241 = 332478^2 + 1139921^2 .

It is not a de Polignac number, because 1409961506725 - 2¹⁷ = 1409961375653 is a prime.

It is a super-3 number, since 3×1409961506725³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400329 + ... + 1726321.

It is an arithmetic number, because the mean of its divisors is an integer number (145699557723).

Almost surely, 2^{1409961506725} is an apocalyptic number.

It is an amenable number.

1409961506725 is a deficient number, since it is larger than the sum of its proper divisors (338433185951).

1409961506725 is a wasteful number, since it uses less digits than its factorization.

1409961506725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368536 (or 1368531 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 1409961506725 in words is "one trillion, four hundred nine billion, nine hundred sixty-one million, five hundred six thousand, seven hundred twenty-five".