155744676025 has 9 divisors (see below), whose sum is σ = 193125845101. Its totient is φ = 124594162240.

The previous prime is 155744676023. The next prime is 155744676041. The reversal of 155744676025 is 520676447551.

The square root of 155744676025 is 394645.

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

It can be written as a sum of positive squares in 4 ways, for example, as 33157860649 + 122586815376 = 182093^2 + 350124^2 .

It is not a de Polignac number, because 155744676025 - 2¹ = 155744676023 is a prime.

It is a super-3 number, since 3×155744676025³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155744676023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1933761 + ... + 2012689.

Almost surely, 2^155744676025 is an apocalyptic number.

155744676025 is the 394645-th square number.

155744676025 is the 197323-rd centered octagonal number.

It is an amenable number.

155744676025 is a deficient number, since it is larger than the sum of its proper divisors (37381169076).

155744676025 is an frugal number, since it uses more digits than its factorization.

155744676025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157868 (or 78934 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 52.

The spelling of 155744676025 in words is "one hundred fifty-five billion, seven hundred forty-four million, six hundred seventy-six thousand, twenty-five".